Pixel-based

OpenTTD is a clone of the Microprose game "Transport Tycoon Deluxe", a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it. It can be downloaded at www.openttd.org

Rollercoaster Tycoon 2 is a strategy game from Chris Sawyer and Infogrames. It is the sequel to the hugely popular original RCT, and is not very different from it. As before, there are a large number of scenarios for you to attempt, all of which require you to build, maintain, and/or manage a theme park, with varying conditions and objectives.

Worms: Armageddon is a turn-based strategy game from Team 17 and MicroProse. You command a squad of worms and must take out one or more opposing squads using an array of heavy weaponry ranging from bazookas and grenades to nukes and doomsday devices.

Command & Conquer: Tiberian Sun, is a sci-fi themed RTS from Westwood and EA, and a sequel to the pioneering Command & Conquer. You play as the commander of GDI or NOD, and continue to wage apocalyptic war on the other side.

Total Annihilation is a sci-fi themed RTS from Cavedog and GT Interactive. You play as the commander of either the Arm or Core, and fight the other side in an intergalactic war with high tech weapons like giant robots and plasma cannons.

Civilization III is a turn based strategy game from Firaxis Games and Infogrames. The basis of Civ 3, like in the previous two, is building a civilization from a primitive tribe to a modern empire, developing cities, technology, and culture, and conquering weaker empires while making peace with stronger ones.

Command & Conquer: Red Alert 2 is an RTS from Westwood Studios and EA. In the alternate universe where Germany never rose to power, the Allies and Soviets are at it again, but this time the Soviets have launched a full scale invasion of the US. You can command Allied forces and repel the invasion, or command Soviet forces and lay waste to the US and its allies.

Command & Conquer: Red Alert is a real-time strategy computer game of the Command & Conquer franchise, produced by Westwood Studios and released by Virgin Interactive in 1996. The second game to bear the "C&C" title, Red Alert is the prequel to the original Command & Conquer of 1995, and takes place in the alternate early history of Command & Conquer when Allied Forces battle an aggressive Soviet Union for control over the European mainland.